194 Records of the Indian Museum. [Von Xan, 
M 272 «Investigator’ station 328: 7-11i-1904, Gulf of Martaban, 14° 
46’ N., 95° 52’ E., 61 fathoms—One ¢ 
Brock objects to Hoyle’s view that the O. ocellatus of Appellof 
is the same species as O.areolatus, and states that the umbrella 
in Appellof’s species is weakly developed and that the ocellus is 
placed close to its edge. A glance at Appellof’s fig. 2 of pl. 1 
shows, however, that he placed the ocellus at fully 8 mm. from 
the edge of the umbrella, and in his description he states that the 
umbrella is ‘‘ well developed ’’ (Val utvecklad) and describes the 
situation of the ocellus as being ‘‘ between the base of the second 
and third arm pair.’ Appell6df’s description and illustration of the 
terminal organ of the hectocotylized arm, and the widely devel- 
oped membranous sperm canal with its transverse grooves, closely 
agrees with the form of hectocotylus in the present specimen, which 
is, however, characterized by a somewhat shorter body than that 
of the example figured by Appellof. It has the mantle widest 
posteriorly and with a conspicuous ventral furrow. Arms two and 
a half to three times the length of the body and with prominent 
suckers, some of which are enlarged on the lateral arms. Umbrella 
extending to about one-third of the length of the arms, thin, 
smooth and membranous, except between the dorsal pair, where 
it is much shorter, thick and tubercled. Umbrella continued on 
outer margin of arms for more than two-thirds of their length. 
Ocelli placed midway between eye and edge of umbrella, each con- 
sisting of a dark core surrounded by a white ring, and succeeded 
by adark outer ring. Mantle opening placed a little below and 
behind eye,and ona line with ocellus, visible from above. Funnel 
free for half its length and reaching considerably above level of 
eye. Funnel organ more like the typical printer’s W than Berry’s 
illustration (1912a, fig. 1). Dorsal surface of head and mantle close- 
ly set with round tubercles ; traces of cirri on dorsal edge of eye. 
The space between each tubercle is covered with minute dark 
chromatophores which are thinly scattered on the ventral surface, 
causing the colour to appear grey above and buff beneath. Hoyle 
(1886, p. 87) remarks that ‘‘ on the outer surface of each of the 
four ventral arms are two rows of dark elongated spots.’’ All the 
arms of the present specimen are thus adorned. 
The principal measurements are appended :— 
mm. 
End of body to mantle-margin —... ies ban 20 
rasta ear 5 VE xo ae Zn> No 25 
Eye to umbrella is ae a rt 11 
Breadth of body pi ee oe ae 19 
: ,, head ar i, es 2 13 
Ist right arm ae oe Ba Reba 
onGhs a we a ge. ae 409 
BUG E fey og re 4 Be (i Maras 
Atha ieut, a ie ee LON 
rstiletty » 4 at bee am aa 39 
2nd ,, bi A ace ne bc 52 
ehaal 5 ha ef aa ax 58 
Athi ty 38 “on Re oa ute 56 
Hectocotylus oe ; 
